Inclusion of caregiver and family member (‘spillover’) quality-adjusted life-years (QALYs) in cost-effectiveness analyses (CEAs) is recommended by multiple national guidance bodies. |
Caregiver and family member QALYs can include spillover utilities (the independent utility loss due to a family member’s illness) that are rarely reported in the literature; more common are caregivers’/family members’ utilities, sometimes in combination with a comparator utility. |
Research gaps remain in spillover effect estimation and incorporation methods, slowing the adoption of these additional measures of burden into cost-effectiveness evaluations. |
1 Background
2 Methods
2.1 Eligibility Criteria
2.2 Data Collection
3 Results
Author, year | Patient disease/condition | Patients’ age (adult/child/either) | Valuation measurea | Sample source | Country included in the sample | Affected person’s role (family member, caregiver, etc.) | Caregiver/family member age, years [mean (SD) unless otherwise specified] | Sample size | Spillover utility loss, or utility when noted [mean (SD) unless otherwise specified] | Comparison group source (if any) | Comparison group utility [mean (SD) unless otherwise specified] | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Davidson et al., 2008 [28] | Any disease/condition | Adult–elderly | EQ-5D | EURO-FAMCARE study (six-country study of family caregivers) | Sweden | Family caregivers: partner, child | 65.4 | 910 | (a) − 0.015 (b) − 0.062 | (a) Family caregiver utility minus age/sex-adjusted population mean (b) ‘R-QALY’ = family caregiver utility minus hypothetical scenario of family member in good health/not needing care Also reported at 12-month follow-up time point and by sex | ||
Prosser et al., 2015 [27] | Arthritis | Adult | Standard gamble | Internet panel weighted to US population | US | Family members | 18–29: 15.2% 30–44: 22.3% 45–59: 31.0% ≥ 60: 31.5%b | 382 | 0.27 (0.25), median: 0.20 [IQR 0.05–0.50] | 1 minus respondent-reported utility for hypothetical family member of patient; also reported for cancer, dementia, depression | ||
Prosser et al., 2015 [27] | Cancer: not specified | Adult | Standard gamble | Internet panel weighted to US population | US | Family members | 18–29: 15.2% 30–44: 22.3% 45–59: 31.0% ≥60: 31.5%b | 506 | 0.27 (0.25), median: 0.25 [IQR 0.02–0.50] | 1 minus respondent-reported utility for hypothetical family member of patient; also reported for arthritis, dementia, depression | ||
Basu et al., 2010 [30] | Cancer: prostate | Adult | Time trade-off (modified) | 1 hospital | US | Family members: partner | 57.7 (6.6) | 26 | Spillover utility: incontinence: 0.675 (0.344) | Utility for spillover effect of patient’s health on spouse; also reported for impotence, post-prostatectomy, post-radiation therapy, ‘watchful waiting’, metastasis, and death | ||
Poley et al., 2012 [24] | Congenital abnormality: ARM, CDH | Child | EQ-5D | 1 hospital | Netherlands | Family caregivers: parents | Females: 35 [range 22–48] Males: 38 [range 24–59] | 262 | 25- to 34-year-old mothers of child with ARM: − 0.10 | General population by age category | NS | Also reported as mean family caregiver utility (Table 2); all utilities reported by mother/father and age group (25–34 and 35–44 years) |
Prosser et al., 2015 [27] | Dementia: Alzheimer’s disease | Adult | Standard gamble | Internet panel weighted to US population | US | Family members | 18–29: 15.2% 30–44: 22.3% 45–59: 31.0% ≥ 60: 31.5%b | 206 | 0.25 (0.24), median: 0.21 [IQR 0.02–0.50] | 1 minus respondent-reported utility for hypothetical family member of patient; also reported for cancer, arthritis, depression | ||
Prosser et al., 2015 [27] | Depression | Adult | Standard gamble | Internet panel weighted to US population | US | Family members | 18–29: 15.2% 30–44: 22.3% 45–59: 31.0% ≥ 60: 31.5%b | 541 | 0.26 (0.24), median: 0.20 [IQR 0.02–0.50] | 1 minus respondent-reported utility for hypothetical family member of patient; also reported for cancer, dementia, arthritis | ||
Landfeldt et al., 2016 [43] | Duchenne muscular dystrophy | Child | EQ-5D | Disease network | Germany, Italy, UK, US | Family caregivers: parent | 44 (8) | 770 | 0.11 | Population mean (age 35–44 years) | NS | Also reported as caregiver utility (Table 2), and by patient ambulation status, health status, and mental status |
Wittenberg et al., 2016 [29] | Opioid use/treatment | Adult | Standard gamble | Nationally representative internet panel | US | Family members: spouse | 18–24: 12.1% 25–44: 33.2% 45–64: 36.6% 65 + : 18.1%b | 372 | Spillover utility: active injection misuse 0.743, median 0.83 [IQR 0.510–1.0] | Utility for hypothetical spouse of individual in health state; also reported for active prescription misuse, methadone therapy, and buprenorphine therapy | ||
Crawford et al., 2017 [26] | Otitis media: acute | Child | EQ-5D | 3 hospitals | Malaysia | Family caregivers: parent | NS | 110 | (0.10) [range −0.07–0.55], median 0 | Population norms (gender based) | NS | Also reported as caregiver utility (Table 3) |
Brouwer et al., 2004 [25] | Rheumatoid arthritis | Adult | EQ-5D | Multicenter | Netherlands | Family caregivers: partner | 61.5 | 145 | 0.0173 (0.2218) | General population (age- and sex-adjusted) | 0.8035 (0.0586) | Also reported as mean caregiver utility (Table 2), and by caregiver sex, and patient quality of life |
Author, year | Patient disease/condition | Patients’ age (adult/child/ either) | Valuation measurea | Sample source | Country included in the sample | Affected person’s role (family member, caregiver, etc.) | Caregiver/ family member age, years [mean (SD) unless otherwise specified] | Sample size | Utility [mean (SD) unless otherwise specified] | Comparison group source | Comparison group sample size | Comparison group utility [mean (SD) unless otherwise specified) | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Matched comparison group
| |||||||||||||
Kuhlthau et al., 2010 [44] | Activity limitations | Child | EQ-5D | Medical Expenditures Panel Survey | US | Family caregivers: parents | < 25: 3.7% 25–39: 51.8% 40–54: 39.4% 55 + : 5.1% | 2412 | 0.82 | Parents of children without activity limitation | 13,560 | 0.9 | |
Thomas et al., 2015 [45] | Any disease/condition | Either | EQ-5D | Population survey of primary care patients | UK | Informal caregivers | 8 age categories reported, 18–85 + | 195,364 | 0.81 | Non-caregivers | 764,633 | 0.84 | Sample is a population of primary care patients in England; also reported by no. of hours caregiving/week |
Song et al., 2012 [46] | Cancer: 3–6 months after death | Adult | EQ-5D | 33 palliative care centers | Korea | Family members: spouse, non-spouse | 53.2 (12.5) | 353 | 0.88 (0.2) | Non-bereaved family members | 353 | 0.93 (0.13) | |
Lee et al., 2015 [47] | Cancer | Either | EQ-5D | National survey | Korea | Family members | NS | 3406 | 0.9225 (0.1278) | Non-cancer families | 160,089 | 0.9411 | Also reported by family member sociodemographic strata and perceived health status of the patient |
Zhou et al., 2016 [48] | Death: maternal death due to pregnancy | Adult | EQ-5D | Childbirth records | China | Family members: husbands | Median: 33 [IQR 27–39] | 84 | Baseline: 0.73 (0.07) @1 year: 0.78 (0.07) | Families without a maternal death | 96 | Baseline: 0.82 (0.05) @1 year: 0.83 (0.04) | |
Mohide et al., 1988 [37] | Chronic degenerative disorders | Adult | TTO | Visiting nurse agency and community service organization | Canada | Family caregivers | 79.9 (10.9) | 28 | Caregivers of physically impaired: 0.795 Cognitively impaired: 0.412 | Family members living with well elderly relatives | 10 | 0.990 | Instrument development study (CQLI); also reported for standardized caregiver wellbeing states: mild, moderate, severe |
Gupta et al., 2012 [49] | Dementia: Alzheimer’s disease | NS | SF-6D | Opt-in panel, weighted to population | US | Informal caregivers | 52.51 (14.51) | 1341 | 0.70 (0.14) | Non-caregivers | 69,224 | 0.74 (0.14) | Also reported for multiple sclerosis (below) |
Laks et al., 2016 [50] | Dementia: Alzheimer’s disease and other | Adult | SF-6D | Opt-in internet panel, weighted to population | Brazil | Informal caregivers | 42.09 (13.65) | 209 | 0.682 (0.139) | Non-caregivers | 10,644 | 0.715 (0.137) | |
Rochanathimoke et al., 2018 [51] | Diarrhea: acute | Child | EQ-5D | 3 hospitals | Thailand | Family caregivers: parent, grandparent (1 sibling) | NS | 460 | 0.620 (0.12), median: 0.635 [IQR 0.514–0.694] | Same caregivers imagining child prior to hospital stay | 460 | 0.964 (0.10), median: 1 [IQR 1–1] | Also reported by condition severity and whether diarrhea was rotavirus positive or negative |
Brisson et al., 2010 [52] | Gastroenteritis (due to rotavirus) | Child | EQ-5D | 59 outpatient practices | Canada | Family members: parents | NS | 186 | Baseline: 0.875 @ week 1: 0.945 | Parent post-episode | 186 | @ week 2 0.967 | Also calculated as QALY loss compared to end of episode (@ week 2) |
Al-Janabi et al., 2016 [53] | Meningitis (long-term effects) | Either | EQ-5D-5L | Meningitis charity | UK | Family members | 51 (13) | 1053 | 0.87 | Family members of meningitis patients with no after effects | 517 | 0.91 | |
Gupta et al., 2012 [49] | Multiple sclerosis | NS | SF-6D | Opt-in survey panel, weighted to population | US | Informal caregivers | 43.16 (15.80) | 215 | 0.70 (0.15) | Non-caregivers | 69,224 | 0.74 (0.14) | Also reported for dementia (above) |
Acaster et al., 2013 [54] | Multiple sclerosis | Adult | EQ-5D | Patient recruitment panel | UK | Informal caregivers | 50.88 (13.48) | 200 | 0.74 (0.28) | Matched controls | 200 | 0.82 (0.25) | |
Gupta et al., 2015 [55] | Schizophrenia | Adult | SF-6D | Opt-in panel, weighted to population | France, Germany, Italy, Spain, UK | Informal caregivers | 45.3 (15.8) | 398 | 0.64 (0.12) | Non-caregivers | 796 | 0.71 (0.13) | |
Tilford et al., 2005 [4] | Spina bifida | Child | QWB | State birth defects surveillance system | US | Family caregivers: parents | 37.7 (8.9) | 98 | 0.76 (0.11) [range 0.54–1.0] | Families with a similar-aged child without spina bifida | 49 | 0.80 (0.10) [range 0.59–1.00] | Also reported by location of lesion |
Persson et al., 2017 [56] | Stroke (7 years post) | Adult | SF-6D | 4 stroke units | Sweden | Family members: spouse | 63 (11) | 248 | 0.75 (0.12) [range 0.44–0.94] | Spouses of individuals who had not had a stroke | 245 | 0.77 (0.11) | |
Persson et al., 2017 [57] | Stroke | Adult | SF-6D | 4 stroke units | Sweden | Family members: spouse | 67 (8) | 247 | 0.69 (0.12) | Spouses of individuals who had not had a stroke | 245 | 0.77 (0.11) | Also reported for non-dependent stroke survivors |
General population comparison group
| |||||||||||||
Nogueira et al., 2015 [58] | Alcohol dependence | Adult | SF-6D | Treatment program | Spain | Family caregivers: spouse, child, sibling | 18–29: 6.3% 30–44: 29.7% 45–59: 39.1% 60–74: 20.3% 75 + : 4.7% | 64 | 0.724 (0.213), median: 0.758 [IQR 0.626–0.868] | General population | 600 | 0.807 (0.159), median: 0.874 [IQR 0.750–0.940] | |
Sjolander et al., 2012 [59] | Cancer: advanced lung or gastrointestinal, after diagnosis | Adult | EQ-5D | 2 hospitals | Sweden | Family members: partners, children | 63 (16) | 36 | @ 3 months post diagnosis: 0.73 (0.04); median: 0.8 | General population (UK; 55–64 years age group) | 0.80 (0.01) | Also reported by time after diagnosis, age, and relationship to patient | |
Poley et al., 2012 [24] | Congenital abnormality: ARM, CDH | Child | EQ-5D | 1 hospital | Netherlands | Family caregivers: parents | Females: 35 [range 22–48] Males: 38 [range 24–59] | 262 | 25- to 34-year-old mothers of child with ARM: 0.83 | General population by age category | NS | Also reported as the difference between caregiver and population mean (Table 1); all utilities reported by parent and age group (25–34 and 35–44 years) | |
Angelis et al., 2015 [60] | Cystic fibrosis | Either | EQ-5D-5L | Cystic Fibrosis Trust | UK | Informal caregivers | 37.3 | 33 | 0.836 (0.155) | General population age 35–44 years | 0.91 (0.16) | ||
Landfeldt et al., 2016 [43] | Duchenne muscular dystrophy | Child | EQ-5D | Disease network | Germany, Italy, UK, US | Family caregivers: parent | 44 (8) | 770 | 0.81 | Population mean (age 35–44 years) | NS | Also reported as the difference between population mean and caregiver utility (Table 1), and by patient ambulation status, health status, and mental status | |
van Andel et al., 2011 [61] | Epilepsy | Adult | EQ-5D | 1 medical center | Netherlands | Family caregivers: partner, parent | 52 [range 21–78] | 86 | 0.88 (0.17) | Population | NS | 0.88 (0.19) | |
Kurien et al., 2017 [62] | Gastrostomy | Adult | EQ-5D | 5 hospitals | UK | Informal caregivers | 65 (12.2) | 100 | 0.95 (0.15) | Population | 200 | 0.93 (0.14) | Also reported 3 months post insertion |
Brouwer et al., 2004 [25] | Rheumatoid arthritis | Adult | EQ-5D | Multicenter | Netherlands | Family caregivers: partner | 61.5 | 145 | 0.8203 (0.2229) | General population (age- and sex-adjusted) | 0.8035 (0.0586) | Also reported as the difference between caregiver and population mean (Table 1); also reported by caregiver sex, and patient quality of life | |
van Exel et al., 2005 [63] | Stroke (6 months post) | Adult | EQ-5D | 6 hospitals | Netherlands | Informal caregivers | 60.0 (13.9) | 135 | 0.83 (0.24) [range − 0.02–1.0] | General population (sex- and age-matched norms) | 0.81 | Also reported by caregiver burden |
Author, year | Patient disease/condition | Patients’ age (adult/child/ either) | Valuation measurea | Sample source | Country included in the sample | Affected person’s role (family member, caregiver, etc.) | Caregiver/family member age, years [mean (SD) unless otherwise specified] | Sample size | Utility [mean (SD) unless otherwise specified] | Notes |
---|---|---|---|---|---|---|---|---|---|---|
Brouwer et al., 2006 [64] | Any disease/condition | Adult | EQ-5D | Regional informal care support centers | Netherlands | Family caregivers: partner, parent, child | 60.8 (13.1) | 175 | 0.75 (0.21) | Instrument validation study with primary data |
Lutomski et al., 2015 [65] | Any disease/condition | Adult | CarerQol-7D | National data repository of research projects on older persons’ health | Netherlands | Family caregivers: partner, child | 63 (12) | 3269 | 79.2 (14.7)b [range 14–98] | Compilation of data across studies; also reported by sampling frame subgroups: general population, hospital, and primary care settings |
Bobinac et al., 2010 [35] | Any disease/condition | NS | EQ-5D | Informal care support centers | Netherlands | Informal caregivers | 55.34 (12.37) | 595 | 0.82 (0.20) [range −0.11–1.0] | Distinguishes between caregiving and caring about, but reported as combined utility |
Brouwer et al., 2005 [7] | Any disease/condition | Either | EQ-5D | Informal care support centers | Netherlands | Family caregivers: partner, child, parent | 60.2 (12.1) [range 17–90] | 843 | 0.76 (0.23) | |
del rio Lozano et al., 2017 [66] | Any disease/condition | Either | EQ-5D-5L | Caregiver registries | Spain | Family caregivers: parents, children, spouses | 59.83 (14.47) | 610 | 0.828 (0.195) | Also reported by sex |
Oldenkamp et al., 2017 [67] | Any disease/condition | Adult–elderly | CarerQol-7D | National data repository of research projects on older persons’ health | Netherlands | Family caregivers: spouse, child | 64.6 (12.61) | 660 | Baseline: median: 83.10b [IQR 73.9–89.6] @ 12 months: median: 80.42 [IQR 74.0–90.0] | |
Hoefman et al., 2014 [68] | Autism spectrum disorder | Child | ED-5D, SF-6D | 2 autism treatment network registries | US | Family caregivers: parents (mostly mothers) | 39.4 (8.3) | 224 | EQ-5D: 0.85 (0.14) SF-6D: 0.74 (0.12) | |
Khanna et al., 2013 [69] | Autism spectrum disorder | Child | EQ-5D | Autism network | US | Family caregivers: parents (mostly mothers) | NS | 316 | 0.82 (0.16) | Psychometric study; also reported by disease severity |
Khanna et al., 2013 [70] | Autism spectrum disorder | Child | EQ-5D | Autism network | US | Family caregivers: parents (mostly mothers) | NS | 316 | Female caregivers: 0.81 (0.16) | Also reported for male caregivers, younger/older caregivers |
Vrettos et al., 2012 [71] | Cancer: during chemotherapy | Adult | EQ-5D | 1 hospital | Greece | Family caregivers: spouses, parents, children | 48.9 [range 20–80] | 212 | Females: 0.783 (0.228) Males: 0.895 (0.141) | |
Bradshaw et al., 2013 [72] | Cognitive impairment | Adult–elderly | EQ-5D | Acute general hospital wards | UK | Family caregivers: spouse, child, other | Median: 62 [IQR 56–73] | 180 | Median: 0.8 [IQR 0.62–1.0] | Also reported by caregiver/patient living situation |
Payakachat et al., 2011 [73] | Craniofacial malformations | Child | HUI3, SF-6D, QWB | State monitoring study sample | US | Family members | 31.9 (5.3) [range 23.2–45.7] | 65 | HUI3: 0.84 (0.23) [range − 0.18–1.0] SF-6D: 0.81 (0.13) [range 0.51–1.0] QWB: 0.67 (0.14) [range 0.29–1.0] | |
Chevreul, 2016 [74] | Cystic fibrosis | Either | EQ-5D | Cystic fibrosis associations, registries | Bulgaria, France, Germany, Hungary, Italy, Spain, Sweden, UK | Informal caregivers | 34.5 (5.8)–42.9 (8.0) across countries | 271 total; 56 Spain | Spain: 0.919 (0.086) | Reported by country |
Chevreul et al., 2015 [75] | Cystic fibrosis | Either | EQ-5D-5L | Cystic fibrosis associations | France | Informal caregivers | NS | 40 | 0.761 | Also reported by disease duration |
Fitzgerald et al., 2018 [76] | Cystic fibrosis | Child | CarerQol-7D | National cohort study of cystic fibrosis | Ireland | Family caregivers: parents | Mothers: 35.5 (4.9) Fathers: 38.0 (5.5) | 195 | Mothers: 84.7b [IQR 74.5–88.0] Fathers: 89.2 [IQR 79.6–96.5] | Also reported by child age |
Kraijo et al., 2014 [77] | Dementia: not specified | Adult | CarerQol-7D | Patient registries | Netherlands | Family caregivers: partners and parents | 66.4 (13.4) [range 29–93] | 223 | 70.1b (19.7) [range 5–100] | |
Bell et al., 2001 [78] | Dementia: Alzheimer’s disease | Adult | HUI2 | 13 community and institutional care sites | US | Informal caregivers | 63 | 679 | 0.87 (0.11) | Also reported by disease severity and recruitment setting |
Fang et al., 2016 [79] | Dementia: Alzheimer’s disease | Adult | EQ-5D | 9 clinics | Canada | Caregivers | Median: 69 [IQR 59–77] | 216 | UK weights: 0.8 Canadian weights: 0.83 | Reported using UK and Canadian valuation sets; also reported by disease severity |
Majoni and Oremus, 2017 [80] | Dementia: Alzheimer’s disease | Adult | EQ-5D | 9 clinics | Canada | Informal caregivers | Retired median: 74 [IQR 68–80] Employed median: 56 [IQR 51–62] | 200 | Retired median: 0.8 [IQR 0.73–1.0] Employed median: 0.84 [IQR 0.83–1.0] | Reported separately for retired and employed caregivers |
Neumann et al., 2000 [81] | Dementia: Alzheimer’s disease | Adult | HUI2 and HUI3 | 13 community and institutional care sites | US | Caregivers | 63 (14) | 679 | HUI2: 0.87 (0.18) HUI3: 0.87 (0.14) | Also reported by disease severity |
Oremus et al., 2014 [82] | Dementia: Alzheimer’s disease | Adult | EQ-5D | Memory and geriatric clinics | Canada | Informal caregivers | Median: 69 [IQR 59–77] | 216 | US weights: 0.85, median: 0.83 [IQR 0.79–1.0] Canadian weights: 0.80, median: 0.83 [IQR 0.74–0.89] | Reported using US and Canadian valuation sets; also reported by disease severity |
Reed et al., 2017 [83] | Dementia: Alzheimer’s disease | Adult | EQ-5D | Memory clinics | France, Germany, UK | Informal caregivers | 67.3 (12.0) | 1495 | 0.84 (0.2), median: 0.89 [IQR 0.79–1.0] | Also reported by disease severity |
Dahlrup et al., 2014 [84] | Dementia: not specified | Adult–elderly | EQ-5D | Social service agencies | Sweden | Family caregivers | Intervention median: 62 [IQR 27–90] Control median: 62 [IQR 38–95] | 308 | Intervention median: 0.848 [IQR 0.725–1.0] Control median: 0.796 [IQR 0.725–1.0] | Caregiver intervention trial; also reported by patient living situation and relationship with patient |
Knapp et al., 2013 [85] | Dementia: not specified | Adult | EQ-5D | 4 service settings | UK | Family caregivers | NS | 260 | Usual treatment: 0.77 (0.23) Intervention: 0.77 (0.22) | Caregiver intervention trial; also reported at follow-up period |
Orrell et al., 2017 [86] | Dementia: not specified | Adult | EQ-5D | 8 care centers and disease associations | UK | Informal caregivers | NS | 273 | Intervention: 0.82 Control: 0.76 | Patient and caregiver intervention trial; also reported at mid-way point in trial |
Stewart et al., 2005 [87] | Dementia: not specified | Adult–elderly | EQ-5D | Social services and occupational therapy sites | UK | Informal caregivers | NS | 80 | Arm 1: 0.69 (0.28) Arm 2: 0.77 (0.21) | Patient and caregiver intervention trial, two arms; also reported at follow-up |
Vroomen et al., 2016 [88] | Dementia: not specified | Adult | EQ-5D | Case management clients | Netherlands | Informal caregivers | Intervention 1: 64.5 (12.8) Intervention 2: 64.4 (12.4) Controls: 65.8 (11.7) | 521 | Intervention 1: 0.8 (0.2) Intervention 2: 0.9 (0.2) Controls: 0.9 (0.2) | Patient/caregiver intervention trial |
Tiberg et al., 2016 [89] | Diabetes: type 1 | Child | SF-6D | 1 hospital | Sweden | Family caregivers: parents | Control: mothers: 40.4 (5.3); fathers: 43.6 (6.6); Intervention: mothers: 40.1 (6.2); fathers: 42.6 (5.7) | 76 | Control: 0.775 Intervention: 0.811 | Patient intervention trial; also reported separately at discharge and three follow-up time points |
Campbell et al., 2018 [90] | Dravet syndrome | Child | EQ-5D-5L | 1 hospital | US | Informal caregivers | NS | 30 | 0.78 (0.17) [range 0.31–1] | |
Cavazza et al., 2016 [91] | Duchenne muscular dystrophy | Either | EQ-5D | Patient organizations | Bulgaria, France, Germany, Hungary, Italy, Spain, Sweden, UK | Informal caregivers | 25.0–49.6 across countries | 154 | Across countries: 0.71 | Also reported by country |
Chevreul et al., 2016 [92] | Fragile X syndrome | Either | EQ-5D | Patient associations and registries | France, Hungary, Italy, Spain, Sweden, UK | Family caregivers: parent, other | 37.5 (7.0)–47.9 (11.8) across countries | 110 total (56 France) | France: 0.754 (0.239) | Reported by country |
Chevreul et al., 2015 [93] | Fragile X syndrome | Either | EQ-5D-5L | Patient associations | France | Informal caregivers | NS | NS | 0.75 (0.24) | Also reported by patient age |
Agren et al., 2013 [94] | Heart failure | Adult | SF-6D | 2 hospitals | Sweden | Family caregivers: partner | Intervention: 67 (12) Controls: 70 (10) | 109 | Intervention group: 0.7112 Controls: 0.7096 | RCT of intervention for patient/partner dyads; also reported at 12-month follow-up |
Iqbal et al., 2010 [95] | Heart failure | Adult | EQ-5D | 1 academic hospital | NS | Informal caregivers | 131 | 0.76 (0.03) | Also reported by caregiver sex, patient quality of life | |
Squire et al., 2017 [96] | Heart failure | Adult | EQ-5D-5L and CES | 5 care centers | England | Family caregivers | 69 [range 43–88] | 72 | EQ-5D: 0.75 (0.18), [range 0.28–1.0], median: 0.77 CES 39 (20), median 38b | |
Cavazza et al., 2016 [97] | Hemophilia | Either | EQ-5D | Patient associations | Bulgaria, France, Germany, Hungary, Italy, Spain, Sweden, UK | Family caregivers: parent, partner | 34.7 (8.6)–48.0 (19.8) across countries | 62 | Across countries: 0.87 (0.15) | Also reported by country |
Al-Janabi et al., 2017 [98] | Meningitis (long-term effects) | Either | EQ-5D-5L | Meningitis charity | UK | Family caregivers: parent, partner, grandparent | 52.9 (11.7) | 497 | 0.84 (.20) | |
Bhadhuri et al., 2017 [39] | Meningitis (long-term effects) | Either | EQ-5D-5L, SF-6D | Meningitis charity | UK | Family caregivers and non-caregiving family members | Caregivers: 45.9 (11.9) Non-caregiving family members: 51.2 (12.1) | 648 | Caregivers: 0.80 (0.20) Non-caregiving family members: 0.85 (0.19) | Also reported for SF-6D and by patient improvement and hours of care provided |
Hastrup et al., 2011 [99] | Mental Illness | Either | EQ-5D | Informal caregivers’ regional support centers | Netherlands | Informal caregivers | 59.92 (13.22) | 865 total | 0.73 (0.24) | Comparison of mental illness to somatic illness; also reported for somatic illness (below) and both co-occurring |
Péntek et al., 2016 [100] | Mucopolysaccharidosis | Either | EQ-5D | Patient organizations | Bulgaria, France, Germany, Hungary, Italy, Spain, Sweden | Informal caregivers | 21.5 (29.0)–47.3 (5.6) across countries | 66 | Italy: 0.681 (0.383) | Reported by country |
Crawford et al., 2017 [26] | Otitis media: acute | Child | EQ-5D | 3 hospitals | Malaysia | Family caregivers: parent | NS | 110 | 0.92 (0.10), [range 0.38–1.0], median: 0.94 | Also reported as difference between population norms and caregiver utility (Table 1) |
Hoefman et al., 2015 [101] | Palliative care | Adult | EQ-5D, CarerQol-7D, CES | 1 service provider | Australia | Family caregivers: partner, parent | 62.3 (11.9) | 97 | EQ-5D: 0.7 (0.2) CarerQol: 73.5b (17.1) CES: 72.5b (16.3) | |
Carod-Artal et al., 2013 [102] | Parkinson’s disease | Adult | EQ-5D | 1 hospital outpatient clinic | Brazil | Family caregivers: spouse, child | 55.7 (13.1) | 50 | 0.7 (0.3) [range −0.031–1] | |
Martinez-Martin et al., 2007 [103] | Parkinson’s disease | Adult | EQ-5D | 7 medical centers | Spain | Family caregivers: spouse, child | 61.3 (13.2) [range 30–85] | 78 | 0.8 (0.2) [range 0.2–1] | |
Martinez-Martin et al., 2008 [104] | Parkinson’s disease | Adult | EQ-5D | Specialized practices | Spain | Family caregivers: spouse, child | 59.4 (13.5) [range 25–87] | 286 | 0.79 (0.24) [range −0.15–1.0] | |
Chevreul et al., 2016 [105] | Prader–Willi syndrome | Either | EQ-5D-5L | Patient associations | France | Informal caregivers | NS | 16 | 0.74 (0.25) | Also reported by patient age: child and adult |
van Dam et al., 2017 [106] | Rehabilitation: following geriatric rehabilitation | Adult | CarerQol-7D | 16 skilled nursing facilities | Netherlands | Family caregivers: partner, child | 63 (13.3) | 350 | Median: 83.9b [IQR 74.4–91.7] | |
Daltio et al., 2017 [107] | Schizophrenia | Adult | SF-6D | 1 hospital | Brazil | Family caregivers: parent, partner, child | 56.05 (12.99) | 159 | 0.78 (0.08) | Willingness-to-pay study; utility collected as a descriptive variable |
Hastrup et al., 2011 [99] | Somatic illness (unspecified) | Either | EQ-5D | Informal caregivers’ regional support centers | Netherlands | Informal caregivers | 59.78 (11.86) | 865 total | 0.78 (0.22) | Comparison of mental illness to somatic illness; also reported for mental illness (above) and both co-occurring |
Cramm et al., 2012 [108] | Stroke | Adult | EQ-5D | 9 stroke service facilities | Netherlands | Family caregivers: partner, child, sibling | 59.14 (14.87) | 251 | 0.74 (0.34) | |
Carod-Artal et al., 2009 [109] | Stroke | Adult | EQ-5D | 1 clinic | Brazil | Family caregivers: spouse, children, other family | 42.0 (14.1) | 200 | 0.7 (0.2) [range 0.04–0.85] | Also reported by relationship to patient and patient’s functional status |
Chevreul et al., 2015 [110] | Systemic sclerosis (scleroderma) | Adult | EQ-5D-5L | Patient associations | France | Informal caregivers | NS | 14 | 0.66 (0.41) |